Improvement in sewers



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Letters .Pdteat No. 97,447, dated November 30, 1869.

IMPROVEMENT SEWERS.

m The-Schedule referred to in'these Letters Patent and making part of the same.

m T0 a whom @t 'may 007mm: x tunnel, but the other branch-pipe C, if run in a direct Be it known that I, JOHN SILsBY, oi' the city, course from the main sewer-pipe to the house, would county, and State of. New York, have invented a new seriously inteifere with the passage through the tuuanduseful Improvement in'Sewei-s; and I do hereby nel, and with t-lic operation of cleaning out the sewerdeclare the following to be a. full, clear, and exact depipe, or ot' making any repairs on the pipes enclosed scription thereof, which will enable those skilled in the in said tunnel. l art to make and use thesame, reference being had to To obviate this diiiiculty, I sink into the floor ofthe the accompanying drawing, forming part of this spccitunnel a box, D, which is provided with a lid or cover, iication, in which drawing v a, and connects at one end by means ota pipe, b,with

Figure 1 represents a transverse section of a sewer, the main sewer-pipe, and at its opposite end by means with itsconnections, constructed according to my iuof a pipe, c, with the house-cormection o r branchvention. pipe G.

Figure 2 is a detached plan or top view ofthe mud- This pipe c is intended to run up close to the side box, inserted into the house-connection of the sewerof the tunnel, so that it does not materially obstruct pipe. the passagethrough the tunnel, and the cover a is so ligure 3 is a detached plan or top viewof the mudsituated that it can be easily reached and opened from box, attached to or inserted into the main sewer-pipe. the interior of the turmehand that the mud, which is Figure 4 .is a side elevation of the same -liable to accumulate in the box D, can be readily re- Similar letters indicate corresponding parts. moved. p rlfhe-principal object of this improvement is to facil- The mud, which is liable to accumulateiu the main irate the operation of cleaning such sewerpipes,which sewer-pipe, must also be removed from time to time, are enclosed in a tunnel, through which the workmen y and, with the ordinary construction oi' the sewer-pipes,

engaged in cleaning vsaid pipes 'canpass this operation can only be performed with great diiiig luthe bottom of this tunnel is embedded Va mudculty. box, provided with a lid or cover, and forming au vin- ,In order to facilitate this operation, I insert into-the tegral part of the hous -connection of the sewer-pipe, main sewer-pipe, at suitable distances apart, a series `insueh a manner that said house-connection does not of mudboxes, E, a detached plan of one of which is obstruct the passage through the tunnel, and, at the shown in fig. 3. v n same time, ready access can be had to the interior ofl These mud-boxes project below the bottom surface said mnd-boxfor the .purpose of removing the dirt. of the sewer-pipe, (see lig. 1,) so-that the mud settles Similari'rmd-boxes are inserted into the main sewerdown in the same, withoutobstructing. the passage of pipe, at suitable distances apart, and ofsuoh aform that the water through the pipe, and each mud-box is prothey project below the bottom surface of the sewervided with a lid or cover, c, whichcan be easily opened, v pipe, and that the mud, which ismixed with the water and gives free access to the interior of the mud-box passing throughsaid sewer-pipe, and liable to clog the so as to enable the workman to remove the mud with same up at shorter or longer intervals, will settle/in great ease, and vwithout disturbing the ordinary functhe mud-boxes, whence it can bereadily removed withtion of the sewer-pipe.

out interrupting the operation ot the sewer-pipe. Haw'ng thus described my invention,-

In, the drawing- That I claim'as new, and desire to secure by Let- The letter A designates a main sewer-pipe, which is ters Patent, is

situated in a tunnel, B, built under the middle of the -1. 'lhe mud-box 1), sunk into the bottom of the street, as iiulicatmjll in red outlines in iig'. l of the tuunelB,a11d connecting at one end witlrthe main drawing. sewer-pipe A, and at the opposite end with the house- Said main sewer-pipe is intended to be situated connection C, substantially as shown and described. close to one side ofthe tunnel, and itconnects with 2. The mud-box E,-in 'combination with the 'main the houses on the opposite. sides of the street, by sewer-pipe A, substantially as set forth. branch-pipes C C.

lhe pipe C', which extends out through that side ,Witnesses: of the tunnel, close to which the main sewer-pipe is W: HAUFF,`

' situated, does not obstruct the lpassage through the CVAHLE-Rs.

JXO. SILSBY. 

